Insole reinforcing machine with an auxiliary pressing tool



A 1 54 A. s. CLARK v 2,693,607

INSOLE REINFORCING MACHINE WITH AN AUXILIARY PRESSING TOOL Filed July 13, 1953 2 Sheets-Sheet 1 i 1 "iWWWWWWMWW. L a

Inventor Alfred 5'. Clark A. S. CLARK Nov. 9, 1954 INSOLE REINFORCING MACHINE WITH AN AUXILIARY PRESSING TOOL 2 Sheets-Sheet 2 Filed July 13, 1953 In men Z02 A/fred S Clark United States Patent'Ofiice patented ,ffiiiil INSOLE REINFORCING MACHINE WITH AN AUXILIARY PRESSING TOOL Application July 13, 1953, Serial No. 367,398 3 Claims. (21. 12-20.2

This invention relates to machines for reinforcing insoles and is illustrated herein as embodied in a machine of the type disclosed in Letters Patent of the United States No. 1,726,800, granted September 3, 1929, upon an applicationfiled in the name of Frederic E. Bertrand.

The machine of the aforementioned-patent is adapted for use both in pressing together the fiaps'of a channeled insole to form a sewing rib or lip and applying a reinforcing fabric to one face and against the lip of an insole. It comprises a pair of rolls arranged to engage the opposite faces of the lip, a' work positioning or pressure roll having a bulging peripheral surface for engaging the unlipped face of the insole opposite the lip, and a stationary guide engaging the lipped face of the insole and bending the insole over the bulging periphery of the pressure roll. The lower one of the pair of rolls has a grooved, frusto-conical surface which engages both the outer face of the lip and the feather of the insole which it bends to shape it to the curvature of the last bottom. p

In the manufacture of certain types of shoes it is customary to use insoles of relatively thin and inexpensive material on which it is impractical to form ribs or lips by the usual method of cutting a channel in the insole and raising the channel flaps. Such insoles are accordingly provided with ribs made from separate strips of material and attached, by cement or otherwise, during the manufacture of the insole or shoe, the insole being usually reinforced by a layer of fabric, such as canvas, in the manner practised in the manufacture of so-called Economy" insoles.

In operating upon insoles of the type just referred to for reinforcing them with a layer of canvas which has been previously coated with a pressure-responsive adhesive, it has been found that the roll which operates along the inner face of the attached rib to press the canvas into the angle formed between the rib and the adjacent portion of the insole tends to pull the canvas in a manner such as to cause the insole to buckle or to be otherwise distorted, if the canvas adheres firmly to the insole at every point, or to pull the canvas away from the insole at points where it does not adhere firmly.

It is an object of the invention to adapt the machine of the above-mentioned patent for use in applying reinforcing fabric to insoles having ribs attached thereto in a manner to produce a satisfactory bond between the reinforcing fabric and the insole while avoiding the bending or distorting of the insole.

To this end there is provided, in an insole reinforcing machine, the combination of a roll operating along one face of a rib to press the canvas into the angle formed between the face of the rib and the adjacent body portion of the insole, a feed roll engaging the opposite face of the rib and cooperating with the first-named roll to feed the work, a Work positioning or pressure roll engaging the unribbed face of the insole to support the same against the canvas pressing roll, and an auxiliary canvas pressing tool arranged to engage the canvas at a substantial distance from and inwardly of the rib and press it against the insole progressively as the work is fed through the machine. As herein illustrated, the auxiliary pressing tool is mounted above and in parallel relation to the axis of the canvas pressing roll which operates upon the inner face of the rib. The tool is spring-pressed and extends normally, that is, when a rib attached to an insole I there is no work in the machine, beyond the workengaging face of the canvas pressing roll, but yields rearwardly when an insole is introduced' into the machine and the work positioning or pressure roll is moved into engagement with the unribbed face of the insole, to enable it to press the reinforcing fabric against the insole with a pressure which is adjustable in accordance with the thickness and the natureof the insole material by adjustment of the spring.

In operating upon insoles of the type above referred to, it is undesirable to bend the marginal portion of the insole outside the rib or the body portion extending inwardly of the rib. Accordingly, the feed roll which operates along the outer face of the rib is provided with a beveled, transversely grooved peripheral portion for engaging the rib only without engaging the feather of the insole, and the work positioning or pressure roll is provided with a cylindrical surface instead of the bulging peripheral surface of the roll employed in prior machines of this type.

These and other features of the invention will now be described in detail, in connection with the accompanying drawings, and will be particularly pointed out in the claims.

In the drawings,

Fig. l is a perspective view of a portion of the machine illustrating the principaloperating instrumentalities;

Fig. 2 is 'a similar view with to be operated upon;

Fig. 3 is a front sectional elevation showing an insole in the processof being operated upon in the machine;

Fig. 4 is a view of the operating instrumentalities of the machine in inoperative position; and

Fig. 5 is a detail view, partly in section, of the auxiliary pressing tool.

The illustrated machine resembles in its general organization the machine of Letters Patent No. 1,726,800 referred to above; therefore, only so much of the machine will be described as is necessary for an understanding of the invention.

As in the machine of the above-mentioned patent, the work engaging instrumentalities comprise a canvas pressing roll 10, which operates along the inner face of (Figs. 2 and 3) to press as canvas, into the angle of the rib and the adjacent an insole in position a reinforcing fabric R. such formed between the said face body portion of the insole; a feed roll 12 arranged to engage the outer face of the rib and to cooperate with the roll 10 in feeding the work; and a cylindrical work positioning or pressure roll 14 arranged to engage the unribbed face of the insole and to support the insole against the canvas applying instrumentalities. As best shown in Figs. 2, 3, and 4, the feed roll 12 of the illustrated machine has a flat end face 16 and a beveled, transversely grooved marginal portion 18 which engages the outer face of the rib without engaging the feather of the insole. The three rolls 10, 12 and 14 are rotated at substantially the same peripheral speed, the roll 10 being formed on the forward end of a horizontal shaft 20 rotatable in bearings in a carrier 22 and driven through gearing (not shown) from the main shaft 24 of the machine. The feed roll 12 is secured to the main shaft 24 by means of a screw threaded into the reduced front end of the shaft. The work positioning or pressure roll 14 is cylindrical and is adjustably secured to the upper end of a vertical shaft 26 rotatable in a carrier 28 and driven from the main shaft through connections including a bevel gear 30 secured to the shaft 26.

To assist the pressing roll 10 in pressing the reinforcing canvas firmly into the angle between the inner face of the rib and the adjacent portion of the insole, and to insure that the canvas will be securely bonded to the insole, there is provided an auxiliary canvas pressing tool 32 which operates on the same side of the insole as the pressing roll 10 but at a substantial distance inwardly of the insole rib and closely adjacent to the top edge of the pressing roll 10. In the preferred embodiment of the invention the auxiliary tool is in the shape of a rectangular block and is formed integral with a block 34 which is slidably supported on a holder 36 for -movement parallel to and above the axis of the roll 10, the holder being secured in adjusted longitudinal position in the carrier 22 by means of a stud 38 threaded through the carrier. The block 34 has mounted therein a transverse pin 40 which ;extends through 'an elongated slot 42 provided inthe holder 36. As-shown in Fig. 5, the holder has a longitudinal bore in which is mounted a compression spring 44, one end of which bears against the pin 40 andthe other end of which is engaged by a screw 46 threaded into -'a tapped-portion of the bore in the holder and by meansof which the compression of the springmay'bea'djusted-to vary the force with which the auxiliary tool- 32 presses-the-canvas against the insole.

As illustrated in Fig. 4, the auxiliary pressing -tool 32 extends normally, that is, when there is no work piece in-the machine, somewhat beyond the end face of the pressing -'roll 10. When a workpiece is introduped-between the rolls 10 and 12 in the manner described in thepatent above-referred'to, and the work positioning or pressure roll-14 is moved into engagement with the unribbed face of the insole, under'the influence of a spring 48 (Pig. 1) corresponding to spring 110 of the machine of the above-mentionedpatent, the pressing tool 32 is moved rearwardly and the pin 40 slides in the slot 42 an amount determined 'by the thickness of the work piece, the spring '44:yielding under the action of the strongerspring 48. As the work piece is thereafter fed through the machine by the rolls 10, 12 and 1-4, the tool 32 acts on the reinforcing fabric R to press it progressively against the insole along a line substantially distant'from'the inner'face of the rib with a pressure determined by adjustment of the spring 44.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is g 1. In a machine for applying reinforcirigfabric to an insole having'a -rib thereon, the combination of -a roll operating along one face of'the rib to Zpre'ss the reinforcing fabric into the angle between the rib and the insole, a feed roll engaging the opposite face of the rib and cooperating with saidpressing roll to'fecd the work, a spring-actuated work positioning 'orfpressure roll engaging the unribbed face of the insole to supportthe same against -the iabric pressing -roll, and an auxiliary pressing tool spaced from said fabric pressing roll and in parallel relation thereto for engaging the reinforcing fabric and pressing it progressively against the insole at a substantial distance from and inwardly of the rib.

2. In --a -machine for applying'reinforcing fabric to an'insolehaving aribthereon, the combination of a roll operating along onefac'e of'the rib to press the reinforcing fabric into the angle between the rib and the i-nsole, a feed roll engaging the opposite face of the rib and cooperating with said pressing'roll to feed the work, a spring-actuated roll engaging the unribbed face of the insole tosupport'the' sameagainst said pressing roll, and a yielding auxiliary pressing tool arranged in spaced parallel relation to said pressing roll and normally extending beyond the work-engaging end of said -roll -to press the reinforcing fabric progressively against the insole at a substantial distance from and inwardly of the rib.

-3. Ina. mach e for applying reinforcing'fabric-to-an insolehaving a'rib thereon, the combination of a roil operating along one face of the rib to press thefabric into the angle between the rib-and the insole, a-feed roll engaging-the -opposite f -ace of the rib and cooperating with-said=fabric pressing roll-to feed the work, a spring actuated, cylindrical work positioning-or-pressure roll engaging the unribbedf-ace -of the insole to support the same against said fabric pressing roll, an auxiliaryfabric-pressingiool acting to press the-reinforcing fabric-progressively against the insole at a. substantial distance from-and inwardly of the rib, a holder for said tool, means forsecuring the holder in adjusted longitudinal .position, 'a pin carried by the tool and slid-able in aslot inthe holder, a spring mounted in theholderand bearing against said pin to hold the tool in aI-position normally beyond the Work-engaging end of said fabric pressing -roll and press the tool y-ieldingly against the insole, "and means for adjusting the pressureof the spring.

No' references cited. 

